Bagasse-furnace



(No Model.) v2 Sheets-Sheet 1.

W. W. SUTCLIPFB.

BAGASSB PURNAGE.

No. 400,016. Patented Mar. 19, 1889.

NTTED STATES PATENT OFFICE.

IVILLIAM IV. SUTCLIFFE, OF NEIV ORLEANS, LOUISIANA.

BAGASSE-FU RNAC E.

SPECIFICATION forming part of Letters Patent No. 400,016, dated March19, 1889. Application filed December 3l, 1888. Serial No. 295 ,053. (Nomodel.)

To a/ZZ whom it may concern.-

l-e it known that I, XVILLIAM SUT- CLIFFE, a citizen of the UnitedStates, residing at New Orleans, in the parish of Orleans and State ofLouisiana, have invented new and useful Improvements inBagasse-Furnaces, of which the Afollowing is a specification.

My invention relates to that class of steamboilers and furnaces in whichthe heat is generated by bagasse and other waste material; and thepurpose thereof is to simplify and improve 'furnaces of this class byproviding the furnace-grate with air-tuyeres above and below, saidtuyeres being supplied by manifolds located in the return-heat chamberof the furnace behind the bridge-wall, and in providing the tire -box orcombustion -chainber with a reverbcratory arch having a feed-opening infront of the boiler and a refractory firebed to aid the regeneration ofthe products of combustion and to reflect the heat to the forward partof the boiler.

rlhe invention consists in the several novel features of constructionand new combinations of parts hereinafter fully7 set forth, and thendefinitely pointed out in the claims, the said' invention constitutingcertain improvements on the Letters Patent granted me September 1S,1898, and numbered 389,773 and 380,774.

In the accompanying drawings, Figure 1 is a front elevation showing myinvention. Fig. i is a substantially central vertical section of Fig. 1from front to rear. Fig. 3 is a horizontal section of Fig. 2 in theplane a;

In the said drawings, the reference-numeral 1 denotes the wall of thefurnace, within which is arranged a multitubular boiler, 2, of anydesired pattern, partly supported by a bridge-wall, 3.

On the forward end of the furnace is built a combustion-chamber, +L,proj ectin g from beneath the forward elevated end of the multitubularboiler 2. This chamber is provided with a revcrberatory roo t', 5, ofarch shape, and has arear wall, (i, from the top of which a refractoryfire-bed, 7, extends to the top of the bri 'lgc\\'all 3, said refractoryfire-hed being formed of iron or other suitable material.

In the rear of the bridge-wall is a return' heat chamber, 8, withinwhich I arrange trans-A verse manifold pipes i), connnunicating at oneend with a tube, 10, which extends toward the combustion-chamber -l andopens into an air-chamber, l2, inclosed by a wall, 1.3, through whichthe pipe 10 passes. The other wall of this air-chamber is the rear wall,(i, of the combuStien-chamber, which wall is provided with a number ofair tuyeres or openings, 15, entering the ine-box above and below thegrate of the latter. rlhe air-chamber 12 also communicates by way of apassage, 16, beneath the Firebox, with a second air-chamber, 17, in thefront wall inelosing the fireboX,saidchamber17 communicatingb y means ofair-tuyeres 18 with the tire-box both above and below the grate. Thepipes of the manifold 9 are connected to a cross-pipe, 19, which has asupply-pipe, 20, in which an air-currentis created by a blower, 21.

In this invention I employ no chamber in the bridgewall and no fluesleading fromthe combustion-chamber to the boilers. The heat is broughtdirectly in contact with the heating-surfaces of the boiler, as shown inthe drawings, and the refractory bed 7 reflects the heat to the forwardpart of the boiler.

A substantially central feed-passage, 22, is provided in the top of thecombustion-chamber. y

IVhai I claim is- 1. A boilerfurnacc for burning bagasse, consisting ofthe combustion-chamber having a reverberatory arch and extendinglongitudinally from the front wall of the furnace, the air-blastchambers located, respectively, at the front and rear of thecombustion-chamber, communicating by a connecting-passage and providedwith tuyere-openings located above and below the .fire-grato, abridge-wall supporting the boiler, a refractory fire-bed inclined fromabove the rear air-blast chambers to the bridge-wall, an air-heater, andan airforcer for forcing air through the heater into one of theair-blast chambers, substantially as described.

2. In a bagasse-furnace, the combination, with a combustion-chamberhaving front and rear air-chambers provided with tuyeres en- IOO tcl-ingthe {irc-box above and below the grate, and abiower supplying saidstir-pipe, Substansziid Liv-chambers connected by :L passage betiaiiy asdescribed. 10 Heath the conlbustion-Chzunbei, of a tube en- In testimonywhereof I nii-lx 1n y signature in tering one of said nir-chambers,passing presence of two witnesses.

5 through the biridgeovail and into L icturn- VTM. XV. SU'ICYLIlfIi.

heat chmnbei' behind the bridgewztii, manik XVitnesSeS: i'oid 'pipesconnected at one end with said JNO. S. iilOoRE,

tubo mld :it thc other cnd with nn ni1'-pi1)c, l CHAS. G. JOHNSEN.

